A Guyed Support Structure for OWT Installations in Intermediate Water Depths
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Date
2021Type
- Conference Paper
ETH Bibliography
yes
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Abstract
The study provides insights on the design and seismic response of a novel support structure for large capacity offshore wind turbines. In the proposed scheme, the lateral stability of the turbine tower is provided by a taut mooring system comprising of four pre-stressed tendons anchored to the seabed by means of suction caissons. To facilitate installation, a single pinned connection is implemented at the tower base, which is founded on a circular shallow footing. By eliminating the moment transfer at the tower foundation, the system’s design requirements are substantially reduced. Compared to conventional solutions, the proposed system offers the necessary support without resorting to massive and difficult to construct foundations. To demonstrate its efficacy, the system’s performance is investigated under concurrent environmental and seismic loading. The NOWITECH 10MW reference wind turbine, installed in a water depth of 50 m in the seismically active region of the North-Western Adriatic, is used as benchmark. © 2021 by the International Society of Offshore and Polar Engineers (ISOPE). Show more
Publication status
publishedBook title
The Proceedings of The Thirty-first (2021) International Ocean and Polar Engineering Conference (ISOPE 2021)Pages / Article No.
Publisher
International Society of Offshore and Polar EngineersEvent
Subject
Earthquake; FE modelling; Soil–structure–Interaction; Suction caissons; Taut mooringsOrganisational unit
02607 - Institut für Geotechnik / Institute for Geotechnical Engineering09569 - Anastasopoulos, Ioannis / Anastasopoulos, Ioannis
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ETH Bibliography
yes
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